Six little known species in the Parmeliella mariana complex are accepted and described: P. cinerata (Zahlbr.) P. M. Jørg., comb. nov. (Hawaii, Sri Lanka); P. exornata (Zahlbr.) P. M. Jørg., comb. nov. (Borneo, Hawaii); P. flavida P. M. Jørg., sp. nov. (The Phillipines), P. fuscata P. M. Jørg, sp. nov. (India); P. imbricatula (Müll. Arg.) P. M. Jørg., comb. nov. (South America), and P. vainioi (Zahlbr.) P. M. Jørg., comb. nov. (Borneo, Java, The Philippines). Parmeliella flavida is the only known species in the family to contain xanthones. Likewise an isidiate taxon in the P. pannosa complex is accepted as a species and named: P. isidiopannosa P. M. Jørg., stat. & nom. nov. (Central and South America).